Class ScriptRegistry

Container for all ScriptTypes that are available to this application. Note that PlayCanvas scripts can access the Script Registry from inside the application with AppBase#scripts.

Hierarchy (view full)

EventHandler
- ScriptRegistry

Index

Constructors

constructor

Methods

add addSchema fire get getSchema has hasEvent list off on once remove

Constructors

constructor

new ScriptRegistry(app): ScriptRegistry
Create a new ScriptRegistry instance.
Parameters
- app: AppBase
  Application to attach registry to.
Returns ScriptRegistry
Overrides EventHandler.constructor
- Defined in submodules/engine/src/framework/script/script-registry.js:36

Methods

add

add(script): boolean
Add ScriptType to registry. Note: when createScript is called, it will add the ScriptType to the registry automatically. If a script already exists in registry, and the new script has a swap method defined, it will perform code hot swapping automatically in async manner.
Parameters
- script: typeof ScriptType
  Script Type that is created using createScript.
Returns boolean
True if added for the first time or false if script already exists.
Example
```
var PlayerController = pc.createScript('playerController');
// playerController Script Type will be added to pc.ScriptRegistry automatically
console.log(app.scripts.has('playerController')); // outputs true
```
- Defined in submodules/engine/src/framework/script/script-registry.js:82

addSchema

addSchema(id, schema): void
Registers a schema against a script instance.
Parameters
- id: string
  The key to use to store the schema
- schema: AttributeSchema
  An schema definition for the script
Returns void
- Defined in submodules/engine/src/framework/script/script-registry.js:53

fire

fire(name, arg1?, arg2?, arg3?, arg4?, arg5?, arg6?, arg7?, arg8?): EventHandler
Fire an event, all additional arguments are passed on to the event listener.
Parameters
- name: string
  Name of event to fire.
- Optionalarg1: any
  First argument that is passed to the event handler.
- Optionalarg2: any
  Second argument that is passed to the event handler.
- Optionalarg3: any
  Third argument that is passed to the event handler.
- Optionalarg4: any
  Fourth argument that is passed to the event handler.
- Optionalarg5: any
  Fifth argument that is passed to the event handler.
- Optionalarg6: any
  Sixth argument that is passed to the event handler.
- Optionalarg7: any
  Seventh argument that is passed to the event handler.
- Optionalarg8: any
  Eighth argument that is passed to the event handler.
Returns EventHandler
Self for chaining.
Example
```
obj.fire('test', 'This is the message');
```
Inherited from EventHandler.fire
- Defined in submodules/engine/src/core/event-handler.js:241

get

get(name): typeof ScriptType
Get ScriptType by name.
Parameters
- name: string
  Name of a ScriptType.
Returns typeof ScriptType
The Script Type if it exists in the registry or null otherwise.
Example
```
var PlayerController = app.scripts.get('playerController');
```
- Defined in submodules/engine/src/framework/script/script-registry.js:225

getSchema

getSchema(id): AttributeSchema
Returns a schema for a given script name.
Parameters
- id: string
  The key to store the schema under
Returns AttributeSchema
- The schema stored under the key
- Defined in submodules/engine/src/framework/script/script-registry.js:64

has

has(nameOrType): boolean
Check if a ScriptType with the specified name is in the registry.
Parameters
- nameOrType: string | typeof ScriptType
  The name or type of ScriptType.
Returns boolean
True if ScriptType is in registry.
Example
```
if (app.scripts.has('playerController')) {
    // playerController is in pc.ScriptRegistry
}
```
- Defined in submodules/engine/src/framework/script/script-registry.js:240

hasEvent

hasEvent(name): boolean
Test if there are any handlers bound to an event name.
Parameters
- name: string
  The name of the event to test.
Returns boolean
True if the object has handlers bound to the specified event name.
Example
```
obj.on('test', function () { }); // bind an event to 'test'
obj.hasEvent('test'); // returns true
obj.hasEvent('hello'); // returns false
```
Inherited from EventHandler.hasEvent
- Defined in submodules/engine/src/core/event-handler.js:309

list

list(): typeof ScriptType[]
Get list of all ScriptTypes from registry.

Returns typeof ScriptType[]
list of all ScriptTypes in registry.
Example
```
// logs array of all Script Type names available in registry
console.log(app.scripts.list().map(function (o) {
    return o.name;
}));
```
- Defined in submodules/engine/src/framework/script/script-registry.js:261

off

off(name?, callback?, scope?): EventHandler
Detach an event handler from an event. If callback is not provided then all callbacks are unbound from the event, if scope is not provided then all events with the callback will be unbound.
Parameters
- Optionalname: string
  Name of the event to unbind.
- Optionalcallback: HandleEventCallback
  Function to be unbound.
- Optionalscope: object
  Scope that was used as the this when the event is fired.
Returns EventHandler
Self for chaining.
Example
```
const handler = function () {
};
obj.on('test', handler);

obj.off(); // Removes all events
obj.off('test'); // Removes all events called 'test'
obj.off('test', handler); // Removes all handler functions, called 'test'
obj.off('test', handler, this); // Removes all handler functions, called 'test' with scope this
```
Inherited from EventHandler.off
- Defined in submodules/engine/src/core/event-handler.js:155

on

on(name, callback, scope?): EventHandle
Attach an event handler to an event.
Parameters
- name: string
  Name of the event to bind the callback to.
- callback: HandleEventCallback
  Function that is called when event is fired. Note the callback is limited to 8 arguments.
- Optionalscope: object = ...
  Object to use as 'this' when the event is fired, defaults to current this.
Returns EventHandle
Can be used for removing event in the future.
Example
```
obj.on('test', function (a, b) {
    console.log(a + b);
});
obj.fire('test', 1, 2); // prints 3 to the console
```
Example
```
const evt = obj.on('test', function (a, b) {
    console.log(a + b);
});
// some time later
evt.off();
```
Inherited from EventHandler.on
- Defined in submodules/engine/src/core/event-handler.js:112

once

once(name, callback, scope?): EventHandle
Attach an event handler to an event. This handler will be removed after being fired once.
Parameters
- name: string
  Name of the event to bind the callback to.
- callback: HandleEventCallback
  Function that is called when event is fired. Note the callback is limited to 8 arguments.
- Optionalscope: object = ...
  Object to use as 'this' when the event is fired, defaults to current this.
Returns EventHandle
- can be used for removing event in the future.
Example
```
obj.once('test', function (a, b) {
    console.log(a + b);
});
obj.fire('test', 1, 2); // prints 3 to the console
obj.fire('test', 1, 2); // not going to get handled
```
Inherited from EventHandler.once
- Defined in submodules/engine/src/core/event-handler.js:132

remove

remove(nameOrType): boolean
Remove ScriptType.
Parameters
- nameOrType: string | typeof ScriptType
  The name or type of ScriptType.
Returns boolean
True if removed or False if already not in registry.
Example
```
app.scripts.remove('playerController');
```
- Defined in submodules/engine/src/framework/script/script-registry.js:192

Class ScriptRegistry

Hierarchy (view full)

Index

Constructors

Methods

Constructors

constructor

Parameters

Returns ScriptRegistry

Methods

add

Parameters

Returns boolean

Example

addSchema

Parameters

Returns void

fire

Parameters

Returns EventHandler

Example

get

Parameters

Returns typeof ScriptType

Example

getSchema

Parameters

Returns AttributeSchema

has

Parameters

Returns boolean

Example

hasEvent

Parameters

Returns boolean

Example

list

Returns typeof ScriptType[]

Example

off

Parameters

Returns EventHandler

Example

on

Parameters

Returns EventHandle

Example

Example

once

Parameters

Returns EventHandle

Example

remove

Parameters

Returns boolean

Example

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